Coleman 400-Watt 12-Volt Land and Marine Wind Turbine. A lightweight, portable and quiet wind generator ideal for charging your 12-Volt batteries. The Coleman 400-Watt 12-Volt Wind Turbine is designed for both land and marine applications. Completely weatherproof, this turbine is designed for long-lasting use. Great for cottages, 12-Volt battery charging, remote and backup power.